condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0195337 0.0 0.0586011 9 h after light 0.056747066666666665 0.0442515 0.0772465 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.03578626666666666 0.0 0.0566141 9 h after dark 0.036409000000000004 0.0 0.109227 12 h after dark 0.02349886666666667 0.0 0.0704966